I'd think you can count on one hand the number of guys using GRJ's off-the-shelf lighting modules willing/able to replace the microscopic surface-mount trimpot and/or resistor.
That said, has someone proposed tacking on a 2-cent resistor around ~2000 Ohms to any pair of copper islands at the boundaries of each section of 3-LEDs? This would "steal" current from the output of the lighting module. So while the module itself would retain its output range of 5-to-45 mA of current...the amount of current going to the LEDs would be downward shifted to, say, 0-to-40 mA since the resistor would steal ~5 mA of the output. There is some math to work out.
